The logo of Google subsidury Motorola Mobility is pictured at the plant in Toulouse, south western France. / Remy Gabalda, AFP/Getty Images

by Roger Yu, USA TODAY

by Roger Yu, USA TODAY

Motorola Mobility, a mobile phone manufacturer owned by Google, said Thursday it'll lay off about 1,200 additional jobs, or 10% of its workforce, as part of its ongoing efforts to trim cost amid declining sales, according to The Wall Street Journal.

"These cuts are a continuation of the reductions we announced last summer. It's obviously very hard for the employees concerned, and we are committed to helping them through this difficult transition," Motorola said in a statement.

In August, Google confirmed Motorola Mobility will cut 20% of its workforce, or about 4,000 jobs. At the time, Google said the cut was needed for Motorola Mobility to return to profitability.

Google also closed its South Korean operation in December and cut 500 jobs.

Motorola Mobility, which was bought by Google in 2012, was once one of the most innovative mobile phone makers. Its early Razr model, known for its sleek and thin appearance, introduced the era of stylish feature phones in the U.S. in 2003.

But competing in the smartphone market has been a tougher battle for the Libertyville, Ill.-based company. Samsung and Apple make up about half of the global market share.

Last year, Motorola introduced new smartphone models for the first time since the Google acquisition - Droid Razr HD, Droid Razr M and Droid Razr Maxx HD.